I am 19 years old. I weigh about 124 pounds, and I am 5'6". I had sex for the first time on July 2. I started my last period on June 25. The condom broke, and I took the plan B pill as soon as I woke up the next day, so within 20 hours. The following Thursday, July 6, I got my period again, just a week after I got my "normal" period. It is now Aug 6, and I haven't gotten my period yet. My breasts are sore. I feel bloated, and stressed.